/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 18:04:53,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 18:04:53,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 18:04:53,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 18:04:53,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 18:04:53,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 18:04:53,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 18:04:53,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 18:04:53,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 18:04:53,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 18:04:53,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 18:04:53,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 18:04:53,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 18:04:53,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 18:04:53,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 18:04:53,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-02-19 18:04:53,919 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 18:04:53,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 18:04:53,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 18:04:53,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 18:04:53,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 18:04:53,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 18:04:53,922 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 18:04:53,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 18:04:53,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 18:04:53,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 18:04:53,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 18:04:53,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 18:04:53,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 18:04:53,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 18:04:53,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 18:04:53,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 18:04:53,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 18:04:53,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 18:04:54,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 18:04:54,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 18:04:54,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 18:04:54,196 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 18:04:54,197 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 18:04:54,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-02-19 18:04:54,198 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-02-19 18:04:54,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 18:04:54,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 18:04:54,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 18:04:54,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 18:04:54,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 18:04:54,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 18:04:54,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 18:04:54,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 18:04:54,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 18:04:54,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... [2021-02-19 18:04:54,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 18:04:54,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 18:04:54,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 18:04:54,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 18:04:54,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 18:04:54,334 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-19 18:04:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-19 18:04:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-19 18:04:54,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-19 18:04:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-19 18:04:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-19 18:04:54,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 18:04:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 18:04:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 18:04:54,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-02-19 18:04:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-02-19 18:04:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-02-19 18:04:54,336 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-02-19 18:04:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-02-19 18:04:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-02-19 18:04:54,336 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-02-19 18:04:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-02-19 18:04:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-02-19 18:04:54,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-02-19 18:04:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-02-19 18:04:54,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-02-19 18:04:54,338 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-19 18:04:54,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 18:04:54,541 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 18:04:54,542 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:04:54 BoogieIcfgContainer [2021-02-19 18:04:54,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 18:04:54,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 18:04:54,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 18:04:54,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 18:04:54,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 06:04:54" (1/2) ... [2021-02-19 18:04:54,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f82ed9e and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:04:54, skipping insertion in model container [2021-02-19 18:04:54,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:04:54" (2/2) ... [2021-02-19 18:04:54,546 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-02-19 18:04:54,549 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-19 18:04:54,550 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 18:04:54,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 18:04:54,552 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-19 18:04:54,591 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-02-19 18:04:54,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-02-19 18:04:54,625 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 18:04:54,626 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 18:04:54,626 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 18:04:54,626 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 18:04:54,626 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 18:04:54,626 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 18:04:54,626 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 18:04:54,626 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 18:04:54,659 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 54 transitions, 156 flow [2021-02-19 18:05:09,373 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:05:09,957 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:05:09,958 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:05:09,958 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:05:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:05:09,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1489670281, now seen corresponding path program 1 times [2021-02-19 18:05:09,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:05:09,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123460365] [2021-02-19 18:05:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:05:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:05:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:05:10,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123460365] [2021-02-19 18:05:10,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:05:10,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 18:05:10,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158548456] [2021-02-19 18:05:10,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:05:10,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:05:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:05:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:05:10,287 INFO L87 Difference]: Start difference. First operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:05:12,568 INFO L93 Difference]: Finished difference Result 201088 states and 980337 transitions. [2021-02-19 18:05:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 18:05:12,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:05:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:05:13,740 INFO L225 Difference]: With dead ends: 201088 [2021-02-19 18:05:13,740 INFO L226 Difference]: Without dead ends: 201088 [2021-02-19 18:05:13,741 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:05:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201088 states. [2021-02-19 18:05:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201088 to 100373. [2021-02-19 18:05:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100373 states, 100372 states have (on average 4.930000398517515) internal successors, (494834), 100372 states have internal predecessors, (494834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100373 states to 100373 states and 494834 transitions. [2021-02-19 18:05:20,291 INFO L78 Accepts]: Start accepts. Automaton has 100373 states and 494834 transitions. Word has length 46 [2021-02-19 18:05:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:05:20,291 INFO L480 AbstractCegarLoop]: Abstraction has 100373 states and 494834 transitions. [2021-02-19 18:05:20,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 100373 states and 494834 transitions. [2021-02-19 18:05:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:05:20,734 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:05:20,735 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:05:20,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 18:05:20,736 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:05:20,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:05:20,741 INFO L82 PathProgramCache]: Analyzing trace with hash -785479045, now seen corresponding path program 2 times [2021-02-19 18:05:20,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:05:20,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288757381] [2021-02-19 18:05:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:05:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:05:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:05:20,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288757381] [2021-02-19 18:05:20,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:05:20,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 18:05:20,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248037306] [2021-02-19 18:05:20,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:05:20,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:05:20,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:05:20,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:05:20,840 INFO L87 Difference]: Start difference. First operand 100373 states and 494834 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:05:23,293 INFO L93 Difference]: Finished difference Result 237543 states and 1143295 transitions. [2021-02-19 18:05:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 18:05:23,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:05:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:05:24,502 INFO L225 Difference]: With dead ends: 237543 [2021-02-19 18:05:24,502 INFO L226 Difference]: Without dead ends: 237543 [2021-02-19 18:05:24,503 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:05:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237543 states. [2021-02-19 18:05:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237543 to 124242. [2021-02-19 18:05:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124242 states, 124241 states have (on average 4.865503336257757) internal successors, (604495), 124241 states have internal predecessors, (604495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124242 states to 124242 states and 604495 transitions. [2021-02-19 18:05:31,103 INFO L78 Accepts]: Start accepts. Automaton has 124242 states and 604495 transitions. Word has length 46 [2021-02-19 18:05:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:05:31,103 INFO L480 AbstractCegarLoop]: Abstraction has 124242 states and 604495 transitions. [2021-02-19 18:05:31,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 124242 states and 604495 transitions. [2021-02-19 18:05:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:05:31,423 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:05:31,424 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:05:31,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 18:05:31,424 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:05:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:05:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash -2053112391, now seen corresponding path program 3 times [2021-02-19 18:05:31,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:05:31,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382794795] [2021-02-19 18:05:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:05:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:05:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:05:31,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382794795] [2021-02-19 18:05:31,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:05:31,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:05:31,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862738861] [2021-02-19 18:05:31,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:05:31,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:05:31,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:05:31,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:05:31,487 INFO L87 Difference]: Start difference. First operand 124242 states and 604495 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:05:33,722 INFO L93 Difference]: Finished difference Result 232977 states and 1116666 transitions. [2021-02-19 18:05:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 18:05:33,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:05:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:05:35,049 INFO L225 Difference]: With dead ends: 232977 [2021-02-19 18:05:35,049 INFO L226 Difference]: Without dead ends: 232977 [2021-02-19 18:05:35,050 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:05:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2021-02-19 18:05:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 140760. [2021-02-19 18:05:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140760 states, 140759 states have (on average 4.84867752683665) internal successors, (682495), 140759 states have internal predecessors, (682495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140760 states to 140760 states and 682495 transitions. [2021-02-19 18:05:41,528 INFO L78 Accepts]: Start accepts. Automaton has 140760 states and 682495 transitions. Word has length 46 [2021-02-19 18:05:41,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:05:41,528 INFO L480 AbstractCegarLoop]: Abstraction has 140760 states and 682495 transitions. [2021-02-19 18:05:41,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 140760 states and 682495 transitions. [2021-02-19 18:05:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:05:41,906 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:05:41,909 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:05:41,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 18:05:41,909 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:05:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:05:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash -841329805, now seen corresponding path program 4 times [2021-02-19 18:05:41,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:05:41,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695057108] [2021-02-19 18:05:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:05:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:05:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:05:41,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695057108] [2021-02-19 18:05:41,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:05:41,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:05:41,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242736774] [2021-02-19 18:05:41,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:05:41,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:05:41,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:05:41,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:05:41,989 INFO L87 Difference]: Start difference. First operand 140760 states and 682495 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:44,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:05:44,347 INFO L93 Difference]: Finished difference Result 207060 states and 995129 transitions. [2021-02-19 18:05:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:05:44,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:05:44,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:05:45,109 INFO L225 Difference]: With dead ends: 207060 [2021-02-19 18:05:45,109 INFO L226 Difference]: Without dead ends: 207060 [2021-02-19 18:05:45,109 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:05:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207060 states. [2021-02-19 18:05:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207060 to 146091. [2021-02-19 18:05:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146091 states, 146090 states have (on average 4.832856458347594) internal successors, (706032), 146090 states have internal predecessors, (706032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146091 states to 146091 states and 706032 transitions. [2021-02-19 18:05:51,170 INFO L78 Accepts]: Start accepts. Automaton has 146091 states and 706032 transitions. Word has length 46 [2021-02-19 18:05:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:05:51,171 INFO L480 AbstractCegarLoop]: Abstraction has 146091 states and 706032 transitions. [2021-02-19 18:05:51,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 146091 states and 706032 transitions. [2021-02-19 18:05:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:05:52,191 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:05:52,191 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:05:52,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 18:05:52,191 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:05:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:05:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash -237872643, now seen corresponding path program 5 times [2021-02-19 18:05:52,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:05:52,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401802050] [2021-02-19 18:05:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:05:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:05:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:05:52,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401802050] [2021-02-19 18:05:52,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:05:52,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:05:52,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100242614] [2021-02-19 18:05:52,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:05:52,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:05:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:05:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:05:52,241 INFO L87 Difference]: Start difference. First operand 146091 states and 706032 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:05:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:05:54,300 INFO L93 Difference]: Finished difference Result 271147 states and 1272171 transitions. [2021-02-19 18:05:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:05:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:05:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:05:55,800 INFO L225 Difference]: With dead ends: 271147 [2021-02-19 18:05:55,800 INFO L226 Difference]: Without dead ends: 271147 [2021-02-19 18:05:55,800 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-19 18:05:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271147 states. [2021-02-19 18:06:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271147 to 164447. [2021-02-19 18:06:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164447 states, 164446 states have (on average 4.712294613429332) internal successors, (774918), 164446 states have internal predecessors, (774918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164447 states to 164447 states and 774918 transitions. [2021-02-19 18:06:04,126 INFO L78 Accepts]: Start accepts. Automaton has 164447 states and 774918 transitions. Word has length 46 [2021-02-19 18:06:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:06:04,126 INFO L480 AbstractCegarLoop]: Abstraction has 164447 states and 774918 transitions. [2021-02-19 18:06:04,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:04,126 INFO L276 IsEmpty]: Start isEmpty. Operand 164447 states and 774918 transitions. [2021-02-19 18:06:04,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:06:04,918 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:06:04,918 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:06:04,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 18:06:04,918 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:06:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:06:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1657679161, now seen corresponding path program 6 times [2021-02-19 18:06:04,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:06:04,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097551061] [2021-02-19 18:06:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:06:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:06:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:06:05,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097551061] [2021-02-19 18:06:05,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:06:05,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:06:05,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698392752] [2021-02-19 18:06:05,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:06:05,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:06:05,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:06:05,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:06:05,027 INFO L87 Difference]: Start difference. First operand 164447 states and 774918 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:06:08,131 INFO L93 Difference]: Finished difference Result 281393 states and 1303094 transitions. [2021-02-19 18:06:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 18:06:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:06:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:06:09,564 INFO L225 Difference]: With dead ends: 281393 [2021-02-19 18:06:09,564 INFO L226 Difference]: Without dead ends: 281393 [2021-02-19 18:06:09,564 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:06:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281393 states. [2021-02-19 18:06:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281393 to 185569. [2021-02-19 18:06:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185569 states, 185568 states have (on average 4.64495494912916) internal successors, (861955), 185568 states have internal predecessors, (861955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185569 states to 185569 states and 861955 transitions. [2021-02-19 18:06:18,850 INFO L78 Accepts]: Start accepts. Automaton has 185569 states and 861955 transitions. Word has length 46 [2021-02-19 18:06:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:06:18,850 INFO L480 AbstractCegarLoop]: Abstraction has 185569 states and 861955 transitions. [2021-02-19 18:06:18,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 185569 states and 861955 transitions. [2021-02-19 18:06:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:06:19,993 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:06:19,993 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:06:19,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-19 18:06:19,997 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:06:19,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:06:19,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1845241097, now seen corresponding path program 7 times [2021-02-19 18:06:19,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:06:19,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918096939] [2021-02-19 18:06:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:06:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:06:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:06:20,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918096939] [2021-02-19 18:06:20,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:06:20,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 18:06:20,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659525485] [2021-02-19 18:06:20,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:06:20,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:06:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:06:20,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:06:20,108 INFO L87 Difference]: Start difference. First operand 185569 states and 861955 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:06:22,121 INFO L93 Difference]: Finished difference Result 292927 states and 1358658 transitions. [2021-02-19 18:06:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 18:06:22,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:06:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:06:23,461 INFO L225 Difference]: With dead ends: 292927 [2021-02-19 18:06:23,462 INFO L226 Difference]: Without dead ends: 196405 [2021-02-19 18:06:23,462 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:06:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196405 states. [2021-02-19 18:06:28,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196405 to 196405. [2021-02-19 18:06:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196405 states, 196404 states have (on average 4.545100914441661) internal successors, (892676), 196404 states have internal predecessors, (892676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196405 states to 196405 states and 892676 transitions. [2021-02-19 18:06:30,369 INFO L78 Accepts]: Start accepts. Automaton has 196405 states and 892676 transitions. Word has length 46 [2021-02-19 18:06:30,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:06:30,370 INFO L480 AbstractCegarLoop]: Abstraction has 196405 states and 892676 transitions. [2021-02-19 18:06:30,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 196405 states and 892676 transitions. [2021-02-19 18:06:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:06:30,902 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:06:30,902 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:06:30,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-19 18:06:30,902 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:06:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:06:30,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2094379033, now seen corresponding path program 8 times [2021-02-19 18:06:30,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:06:30,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760766566] [2021-02-19 18:06:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:06:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:06:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:06:30,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760766566] [2021-02-19 18:06:30,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:06:30,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:06:30,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718845532] [2021-02-19 18:06:30,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:06:30,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:06:30,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:06:30,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:06:30,938 INFO L87 Difference]: Start difference. First operand 196405 states and 892676 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:33,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:06:33,691 INFO L93 Difference]: Finished difference Result 311447 states and 1399231 transitions. [2021-02-19 18:06:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 18:06:33,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:06:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:06:35,367 INFO L225 Difference]: With dead ends: 311447 [2021-02-19 18:06:35,367 INFO L226 Difference]: Without dead ends: 311255 [2021-02-19 18:06:35,368 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:06:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311255 states. [2021-02-19 18:06:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311255 to 207417. [2021-02-19 18:06:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207417 states, 207416 states have (on average 4.523006903999692) internal successors, (938144), 207416 states have internal predecessors, (938144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207417 states to 207417 states and 938144 transitions. [2021-02-19 18:06:44,014 INFO L78 Accepts]: Start accepts. Automaton has 207417 states and 938144 transitions. Word has length 46 [2021-02-19 18:06:44,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:06:44,014 INFO L480 AbstractCegarLoop]: Abstraction has 207417 states and 938144 transitions. [2021-02-19 18:06:44,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:44,014 INFO L276 IsEmpty]: Start isEmpty. Operand 207417 states and 938144 transitions. [2021-02-19 18:06:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:06:44,577 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:06:44,577 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:06:44,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-19 18:06:44,578 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:06:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:06:44,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1504161005, now seen corresponding path program 9 times [2021-02-19 18:06:44,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:06:44,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042130139] [2021-02-19 18:06:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:06:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:06:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:06:44,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042130139] [2021-02-19 18:06:44,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:06:44,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 18:06:44,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630376791] [2021-02-19 18:06:44,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:06:44,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:06:44,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:06:44,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:06:44,641 INFO L87 Difference]: Start difference. First operand 207417 states and 938144 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:06:47,909 INFO L93 Difference]: Finished difference Result 334168 states and 1492333 transitions. [2021-02-19 18:06:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 18:06:47,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:06:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:06:49,930 INFO L225 Difference]: With dead ends: 334168 [2021-02-19 18:06:49,930 INFO L226 Difference]: Without dead ends: 333766 [2021-02-19 18:06:49,930 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:06:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333766 states. [2021-02-19 18:06:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333766 to 214179. [2021-02-19 18:06:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214179 states, 214178 states have (on average 4.497025838321396) internal successors, (963164), 214178 states have internal predecessors, (963164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214179 states to 214179 states and 963164 transitions. [2021-02-19 18:06:59,722 INFO L78 Accepts]: Start accepts. Automaton has 214179 states and 963164 transitions. Word has length 46 [2021-02-19 18:06:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:06:59,722 INFO L480 AbstractCegarLoop]: Abstraction has 214179 states and 963164 transitions. [2021-02-19 18:06:59,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:06:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 214179 states and 963164 transitions. [2021-02-19 18:07:00,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:07:00,310 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:07:00,310 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:07:00,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-19 18:07:00,311 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:07:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:07:00,311 INFO L82 PathProgramCache]: Analyzing trace with hash -590063537, now seen corresponding path program 10 times [2021-02-19 18:07:00,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:07:00,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217842239] [2021-02-19 18:07:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:07:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:07:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:07:00,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217842239] [2021-02-19 18:07:00,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:07:00,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:07:00,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37155102] [2021-02-19 18:07:00,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:07:00,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:07:00,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:07:00,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:07:00,352 INFO L87 Difference]: Start difference. First operand 214179 states and 963164 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:07:03,205 INFO L93 Difference]: Finished difference Result 354188 states and 1551857 transitions. [2021-02-19 18:07:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 18:07:03,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:07:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:07:04,989 INFO L225 Difference]: With dead ends: 354188 [2021-02-19 18:07:04,989 INFO L226 Difference]: Without dead ends: 353624 [2021-02-19 18:07:04,989 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:07:06,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353624 states. [2021-02-19 18:07:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353624 to 224674. [2021-02-19 18:07:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224674 states, 224673 states have (on average 4.434026340503754) internal successors, (996206), 224673 states have internal predecessors, (996206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224674 states to 224674 states and 996206 transitions. [2021-02-19 18:07:15,015 INFO L78 Accepts]: Start accepts. Automaton has 224674 states and 996206 transitions. Word has length 46 [2021-02-19 18:07:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:07:15,015 INFO L480 AbstractCegarLoop]: Abstraction has 224674 states and 996206 transitions. [2021-02-19 18:07:15,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 224674 states and 996206 transitions. [2021-02-19 18:07:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:07:15,645 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:07:15,645 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:07:15,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-19 18:07:15,645 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:07:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:07:15,645 INFO L82 PathProgramCache]: Analyzing trace with hash 289999049, now seen corresponding path program 11 times [2021-02-19 18:07:15,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:07:15,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002560134] [2021-02-19 18:07:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:07:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:07:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:07:15,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002560134] [2021-02-19 18:07:15,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:07:15,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:07:15,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725195687] [2021-02-19 18:07:15,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:07:15,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:07:15,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:07:15,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:07:15,695 INFO L87 Difference]: Start difference. First operand 224674 states and 996206 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:07:18,355 INFO L93 Difference]: Finished difference Result 313135 states and 1375062 transitions. [2021-02-19 18:07:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:07:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:07:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:07:19,359 INFO L225 Difference]: With dead ends: 313135 [2021-02-19 18:07:19,360 INFO L226 Difference]: Without dead ends: 313027 [2021-02-19 18:07:19,360 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:07:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313027 states. [2021-02-19 18:07:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313027 to 222693. [2021-02-19 18:07:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222693 states, 222692 states have (on average 4.4333384225746775) internal successors, (987269), 222692 states have internal predecessors, (987269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222693 states to 222693 states and 987269 transitions. [2021-02-19 18:07:28,635 INFO L78 Accepts]: Start accepts. Automaton has 222693 states and 987269 transitions. Word has length 46 [2021-02-19 18:07:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:07:28,635 INFO L480 AbstractCegarLoop]: Abstraction has 222693 states and 987269 transitions. [2021-02-19 18:07:28,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 222693 states and 987269 transitions. [2021-02-19 18:07:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:07:29,604 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:07:29,604 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:07:29,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-19 18:07:29,604 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:07:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:07:29,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2084151505, now seen corresponding path program 12 times [2021-02-19 18:07:29,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:07:29,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40804704] [2021-02-19 18:07:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:07:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:07:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:07:29,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40804704] [2021-02-19 18:07:29,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:07:29,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 18:07:29,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905232560] [2021-02-19 18:07:29,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:07:29,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:07:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:07:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:07:29,666 INFO L87 Difference]: Start difference. First operand 222693 states and 987269 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:07:33,177 INFO L93 Difference]: Finished difference Result 393699 states and 1713546 transitions. [2021-02-19 18:07:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 18:07:33,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:07:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:07:35,722 INFO L225 Difference]: With dead ends: 393699 [2021-02-19 18:07:35,722 INFO L226 Difference]: Without dead ends: 393021 [2021-02-19 18:07:35,722 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:07:37,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393021 states. [2021-02-19 18:07:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393021 to 222310. [2021-02-19 18:07:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222310 states, 222309 states have (on average 4.428525160924659) internal successors, (984501), 222309 states have internal predecessors, (984501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222310 states to 222310 states and 984501 transitions. [2021-02-19 18:07:45,073 INFO L78 Accepts]: Start accepts. Automaton has 222310 states and 984501 transitions. Word has length 46 [2021-02-19 18:07:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:07:45,073 INFO L480 AbstractCegarLoop]: Abstraction has 222310 states and 984501 transitions. [2021-02-19 18:07:45,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 222310 states and 984501 transitions. [2021-02-19 18:07:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:07:45,657 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:07:45,657 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:07:45,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-19 18:07:45,658 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:07:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:07:45,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1390426777, now seen corresponding path program 13 times [2021-02-19 18:07:45,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:07:45,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974894121] [2021-02-19 18:07:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:07:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:07:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:07:46,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974894121] [2021-02-19 18:07:46,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:07:46,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 18:07:46,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96709293] [2021-02-19 18:07:46,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:07:46,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:07:46,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:07:46,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:07:46,361 INFO L87 Difference]: Start difference. First operand 222310 states and 984501 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:07:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:07:49,177 INFO L93 Difference]: Finished difference Result 389126 states and 1691004 transitions. [2021-02-19 18:07:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 18:07:49,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:07:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:07:50,506 INFO L225 Difference]: With dead ends: 389126 [2021-02-19 18:07:50,506 INFO L226 Difference]: Without dead ends: 388292 [2021-02-19 18:07:50,507 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:07:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388292 states. [2021-02-19 18:07:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388292 to 218179. [2021-02-19 18:07:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218179 states, 218178 states have (on average 4.420143185839086) internal successors, (964378), 218178 states have internal predecessors, (964378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218179 states to 218179 states and 964378 transitions. [2021-02-19 18:08:00,470 INFO L78 Accepts]: Start accepts. Automaton has 218179 states and 964378 transitions. Word has length 46 [2021-02-19 18:08:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:08:00,470 INFO L480 AbstractCegarLoop]: Abstraction has 218179 states and 964378 transitions. [2021-02-19 18:08:00,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 218179 states and 964378 transitions. [2021-02-19 18:08:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:08:01,077 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:08:01,078 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:08:01,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-19 18:08:01,078 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:08:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:08:01,078 INFO L82 PathProgramCache]: Analyzing trace with hash 50265125, now seen corresponding path program 14 times [2021-02-19 18:08:01,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:08:01,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225105793] [2021-02-19 18:08:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:08:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:08:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:08:01,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225105793] [2021-02-19 18:08:01,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:08:01,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 18:08:01,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073790272] [2021-02-19 18:08:01,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:08:01,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:08:01,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:08:01,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:08:01,115 INFO L87 Difference]: Start difference. First operand 218179 states and 964378 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:08:03,701 INFO L93 Difference]: Finished difference Result 346552 states and 1495008 transitions. [2021-02-19 18:08:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 18:08:03,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:08:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:08:06,010 INFO L225 Difference]: With dead ends: 346552 [2021-02-19 18:08:06,011 INFO L226 Difference]: Without dead ends: 345856 [2021-02-19 18:08:06,012 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:08:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345856 states. [2021-02-19 18:08:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345856 to 215344. [2021-02-19 18:08:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215344 states, 215343 states have (on average 4.33035204301974) internal successors, (932511), 215343 states have internal predecessors, (932511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215344 states to 215344 states and 932511 transitions. [2021-02-19 18:08:15,147 INFO L78 Accepts]: Start accepts. Automaton has 215344 states and 932511 transitions. Word has length 46 [2021-02-19 18:08:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:08:15,147 INFO L480 AbstractCegarLoop]: Abstraction has 215344 states and 932511 transitions. [2021-02-19 18:08:15,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 215344 states and 932511 transitions. [2021-02-19 18:08:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:08:16,382 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:08:16,382 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:08:16,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-19 18:08:16,383 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:08:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:08:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1226176825, now seen corresponding path program 15 times [2021-02-19 18:08:16,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:08:16,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6613632] [2021-02-19 18:08:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:08:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:08:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:08:16,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6613632] [2021-02-19 18:08:16,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:08:16,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 18:08:16,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133960918] [2021-02-19 18:08:16,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:08:16,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:08:16,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:08:16,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:08:16,417 INFO L87 Difference]: Start difference. First operand 215344 states and 932511 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:08:18,493 INFO L93 Difference]: Finished difference Result 325590 states and 1394296 transitions. [2021-02-19 18:08:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 18:08:18,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:08:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:08:20,090 INFO L225 Difference]: With dead ends: 325590 [2021-02-19 18:08:20,090 INFO L226 Difference]: Without dead ends: 324958 [2021-02-19 18:08:20,090 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:08:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324958 states. [2021-02-19 18:08:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324958 to 210014. [2021-02-19 18:08:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210014 states, 210013 states have (on average 4.320808711841648) internal successors, (907426), 210013 states have internal predecessors, (907426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210014 states to 210014 states and 907426 transitions. [2021-02-19 18:08:28,618 INFO L78 Accepts]: Start accepts. Automaton has 210014 states and 907426 transitions. Word has length 46 [2021-02-19 18:08:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:08:28,619 INFO L480 AbstractCegarLoop]: Abstraction has 210014 states and 907426 transitions. [2021-02-19 18:08:28,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 210014 states and 907426 transitions. [2021-02-19 18:08:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:08:29,167 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:08:29,167 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:08:29,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-19 18:08:29,167 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:08:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:08:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1258103835, now seen corresponding path program 16 times [2021-02-19 18:08:29,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:08:29,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550546460] [2021-02-19 18:08:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:08:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:08:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:08:29,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550546460] [2021-02-19 18:08:29,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:08:29,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:08:29,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556904123] [2021-02-19 18:08:29,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:08:29,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:08:29,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:08:29,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:08:29,228 INFO L87 Difference]: Start difference. First operand 210014 states and 907426 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:08:31,786 INFO L93 Difference]: Finished difference Result 316757 states and 1325452 transitions. [2021-02-19 18:08:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:08:31,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:08:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:08:32,828 INFO L225 Difference]: With dead ends: 316757 [2021-02-19 18:08:32,828 INFO L226 Difference]: Without dead ends: 314453 [2021-02-19 18:08:32,829 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-19 18:08:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314453 states. [2021-02-19 18:08:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314453 to 209291. [2021-02-19 18:08:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209291 states, 209290 states have (on average 4.209207319986621) internal successors, (880945), 209290 states have internal predecessors, (880945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209291 states to 209291 states and 880945 transitions. [2021-02-19 18:08:40,781 INFO L78 Accepts]: Start accepts. Automaton has 209291 states and 880945 transitions. Word has length 46 [2021-02-19 18:08:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:08:40,781 INFO L480 AbstractCegarLoop]: Abstraction has 209291 states and 880945 transitions. [2021-02-19 18:08:40,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 209291 states and 880945 transitions. [2021-02-19 18:08:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:08:42,259 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:08:42,259 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:08:42,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-19 18:08:42,260 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:08:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:08:42,260 INFO L82 PathProgramCache]: Analyzing trace with hash 913887399, now seen corresponding path program 17 times [2021-02-19 18:08:42,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:08:42,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436912833] [2021-02-19 18:08:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:08:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:08:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:08:42,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436912833] [2021-02-19 18:08:42,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:08:42,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 18:08:42,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381911072] [2021-02-19 18:08:42,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:08:42,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:08:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:08:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:08:42,335 INFO L87 Difference]: Start difference. First operand 209291 states and 880945 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:08:44,609 INFO L93 Difference]: Finished difference Result 301671 states and 1254865 transitions. [2021-02-19 18:08:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 18:08:44,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:08:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:08:46,793 INFO L225 Difference]: With dead ends: 301671 [2021-02-19 18:08:46,793 INFO L226 Difference]: Without dead ends: 300815 [2021-02-19 18:08:46,811 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:08:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300815 states. [2021-02-19 18:08:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300815 to 205867. [2021-02-19 18:08:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205867 states, 205866 states have (on average 4.184071191940388) internal successors, (861358), 205866 states have internal predecessors, (861358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205867 states to 205867 states and 861358 transitions. [2021-02-19 18:08:54,526 INFO L78 Accepts]: Start accepts. Automaton has 205867 states and 861358 transitions. Word has length 46 [2021-02-19 18:08:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:08:54,526 INFO L480 AbstractCegarLoop]: Abstraction has 205867 states and 861358 transitions. [2021-02-19 18:08:54,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 205867 states and 861358 transitions. [2021-02-19 18:08:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:08:55,641 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:08:55,641 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:08:55,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-19 18:08:55,641 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:08:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:08:55,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1703995845, now seen corresponding path program 18 times [2021-02-19 18:08:55,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:08:55,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038841636] [2021-02-19 18:08:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:08:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:08:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:08:55,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038841636] [2021-02-19 18:08:55,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:08:55,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:08:55,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855914604] [2021-02-19 18:08:55,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:08:55,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:08:55,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:08:55,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:08:55,685 INFO L87 Difference]: Start difference. First operand 205867 states and 861358 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:08:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:08:57,605 INFO L93 Difference]: Finished difference Result 301500 states and 1218655 transitions. [2021-02-19 18:08:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:08:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:08:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:08:59,013 INFO L225 Difference]: With dead ends: 301500 [2021-02-19 18:08:59,013 INFO L226 Difference]: Without dead ends: 298930 [2021-02-19 18:08:59,013 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-19 18:08:59,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298930 states. [2021-02-19 18:09:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298930 to 203045. [2021-02-19 18:09:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203045 states, 203044 states have (on average 4.065946297354268) internal successors, (825566), 203044 states have internal predecessors, (825566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203045 states to 203045 states and 825566 transitions. [2021-02-19 18:09:06,455 INFO L78 Accepts]: Start accepts. Automaton has 203045 states and 825566 transitions. Word has length 46 [2021-02-19 18:09:06,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:09:06,455 INFO L480 AbstractCegarLoop]: Abstraction has 203045 states and 825566 transitions. [2021-02-19 18:09:06,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 203045 states and 825566 transitions. [2021-02-19 18:09:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:09:07,514 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:09:07,514 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:09:07,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-19 18:09:07,515 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:09:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:09:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash 623333029, now seen corresponding path program 19 times [2021-02-19 18:09:07,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:09:07,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420593436] [2021-02-19 18:09:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:09:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:09:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:09:07,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420593436] [2021-02-19 18:09:07,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:09:07,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:09:07,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297069882] [2021-02-19 18:09:07,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:09:07,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:09:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:09:07,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:09:07,550 INFO L87 Difference]: Start difference. First operand 203045 states and 825566 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:09:09,391 INFO L93 Difference]: Finished difference Result 288060 states and 1146724 transitions. [2021-02-19 18:09:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:09:09,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:09:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:09:10,279 INFO L225 Difference]: With dead ends: 288060 [2021-02-19 18:09:10,279 INFO L226 Difference]: Without dead ends: 284768 [2021-02-19 18:09:10,279 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-19 18:09:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284768 states. [2021-02-19 18:09:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284768 to 191781. [2021-02-19 18:09:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191781 states, 191780 states have (on average 4.031426634685578) internal successors, (773147), 191780 states have internal predecessors, (773147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191781 states to 191781 states and 773147 transitions. [2021-02-19 18:09:17,711 INFO L78 Accepts]: Start accepts. Automaton has 191781 states and 773147 transitions. Word has length 46 [2021-02-19 18:09:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:09:17,711 INFO L480 AbstractCegarLoop]: Abstraction has 191781 states and 773147 transitions. [2021-02-19 18:09:17,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 191781 states and 773147 transitions. [2021-02-19 18:09:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:09:18,722 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:09:18,722 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:09:18,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-19 18:09:18,723 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:09:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:09:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1725337815, now seen corresponding path program 20 times [2021-02-19 18:09:18,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:09:18,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326056158] [2021-02-19 18:09:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:09:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:09:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:09:18,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326056158] [2021-02-19 18:09:18,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:09:18,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:09:18,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697759083] [2021-02-19 18:09:18,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:09:18,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:09:18,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:09:18,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:09:18,816 INFO L87 Difference]: Start difference. First operand 191781 states and 773147 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:09:21,177 INFO L93 Difference]: Finished difference Result 289421 states and 1160347 transitions. [2021-02-19 18:09:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:09:21,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:09:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:09:23,059 INFO L225 Difference]: With dead ends: 289421 [2021-02-19 18:09:23,059 INFO L226 Difference]: Without dead ends: 289101 [2021-02-19 18:09:23,059 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:09:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289101 states. [2021-02-19 18:09:28,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289101 to 192581. [2021-02-19 18:09:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192581 states, 192580 states have (on average 4.028969778793229) internal successors, (775899), 192580 states have internal predecessors, (775899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192581 states to 192581 states and 775899 transitions. [2021-02-19 18:09:30,122 INFO L78 Accepts]: Start accepts. Automaton has 192581 states and 775899 transitions. Word has length 46 [2021-02-19 18:09:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:09:30,123 INFO L480 AbstractCegarLoop]: Abstraction has 192581 states and 775899 transitions. [2021-02-19 18:09:30,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 192581 states and 775899 transitions. [2021-02-19 18:09:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:09:30,578 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:09:30,578 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:09:30,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-19 18:09:30,578 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:09:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:09:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1757264825, now seen corresponding path program 21 times [2021-02-19 18:09:30,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:09:30,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920339947] [2021-02-19 18:09:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:09:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:09:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:09:30,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920339947] [2021-02-19 18:09:30,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:09:30,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:09:30,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444629085] [2021-02-19 18:09:30,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:09:30,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:09:30,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:09:30,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:09:30,615 INFO L87 Difference]: Start difference. First operand 192581 states and 775899 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:09:33,236 INFO L93 Difference]: Finished difference Result 289605 states and 1158403 transitions. [2021-02-19 18:09:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 18:09:33,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:09:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:09:34,166 INFO L225 Difference]: With dead ends: 289605 [2021-02-19 18:09:34,166 INFO L226 Difference]: Without dead ends: 287589 [2021-02-19 18:09:34,167 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:09:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287589 states. [2021-02-19 18:09:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287589 to 190411. [2021-02-19 18:09:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190411 states, 190410 states have (on average 4.019452759834042) internal successors, (765344), 190410 states have internal predecessors, (765344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190411 states to 190411 states and 765344 transitions. [2021-02-19 18:09:41,654 INFO L78 Accepts]: Start accepts. Automaton has 190411 states and 765344 transitions. Word has length 46 [2021-02-19 18:09:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:09:41,655 INFO L480 AbstractCegarLoop]: Abstraction has 190411 states and 765344 transitions. [2021-02-19 18:09:41,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 190411 states and 765344 transitions. [2021-02-19 18:09:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:09:42,153 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:09:42,153 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:09:42,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-19 18:09:42,154 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:09:42,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:09:42,154 INFO L82 PathProgramCache]: Analyzing trace with hash -386249277, now seen corresponding path program 22 times [2021-02-19 18:09:42,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:09:42,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558681502] [2021-02-19 18:09:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:09:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:09:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:09:42,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558681502] [2021-02-19 18:09:42,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:09:42,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 18:09:42,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244917019] [2021-02-19 18:09:42,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 18:09:42,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:09:42,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 18:09:42,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:09:42,193 INFO L87 Difference]: Start difference. First operand 190411 states and 765344 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:09:44,332 INFO L93 Difference]: Finished difference Result 295333 states and 1175576 transitions. [2021-02-19 18:09:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 18:09:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:09:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:09:45,708 INFO L225 Difference]: With dead ends: 295333 [2021-02-19 18:09:45,709 INFO L226 Difference]: Without dead ends: 289109 [2021-02-19 18:09:45,709 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-02-19 18:09:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289109 states. [2021-02-19 18:09:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289109 to 197773. [2021-02-19 18:09:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197773 states, 197772 states have (on average 3.9816859818376718) internal successors, (787466), 197772 states have internal predecessors, (787466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197773 states to 197773 states and 787466 transitions. [2021-02-19 18:09:52,952 INFO L78 Accepts]: Start accepts. Automaton has 197773 states and 787466 transitions. Word has length 46 [2021-02-19 18:09:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:09:52,952 INFO L480 AbstractCegarLoop]: Abstraction has 197773 states and 787466 transitions. [2021-02-19 18:09:52,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 197773 states and 787466 transitions. [2021-02-19 18:09:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:09:54,120 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:09:54,120 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:09:54,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-19 18:09:54,121 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:09:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:09:54,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1623015159, now seen corresponding path program 23 times [2021-02-19 18:09:54,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:09:54,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419750409] [2021-02-19 18:09:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:09:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:09:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:09:54,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419750409] [2021-02-19 18:09:54,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:09:54,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:09:54,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88410689] [2021-02-19 18:09:54,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 18:09:54,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:09:54,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 18:09:54,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-19 18:09:54,163 INFO L87 Difference]: Start difference. First operand 197773 states and 787466 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:09:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:09:56,532 INFO L93 Difference]: Finished difference Result 299086 states and 1182852 transitions. [2021-02-19 18:09:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 18:09:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:09:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:09:58,042 INFO L225 Difference]: With dead ends: 299086 [2021-02-19 18:09:58,043 INFO L226 Difference]: Without dead ends: 298566 [2021-02-19 18:09:58,043 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:09:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298566 states. [2021-02-19 18:10:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298566 to 198823. [2021-02-19 18:10:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198823 states, 198822 states have (on average 3.9825371437768458) internal successors, (791816), 198822 states have internal predecessors, (791816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198823 states to 198823 states and 791816 transitions. [2021-02-19 18:10:05,901 INFO L78 Accepts]: Start accepts. Automaton has 198823 states and 791816 transitions. Word has length 46 [2021-02-19 18:10:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:10:05,901 INFO L480 AbstractCegarLoop]: Abstraction has 198823 states and 791816 transitions. [2021-02-19 18:10:05,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 198823 states and 791816 transitions. [2021-02-19 18:10:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:10:07,105 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:10:07,105 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:10:07,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-19 18:10:07,105 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:10:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:10:07,106 INFO L82 PathProgramCache]: Analyzing trace with hash -832906713, now seen corresponding path program 24 times [2021-02-19 18:10:07,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:10:07,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638226512] [2021-02-19 18:10:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:10:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:10:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:10:07,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638226512] [2021-02-19 18:10:07,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:10:07,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:10:07,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214437668] [2021-02-19 18:10:07,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:10:07,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:10:07,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:10:07,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:10:07,151 INFO L87 Difference]: Start difference. First operand 198823 states and 791816 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:10:09,211 INFO L93 Difference]: Finished difference Result 294761 states and 1162068 transitions. [2021-02-19 18:10:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 18:10:09,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:10:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:10:10,644 INFO L225 Difference]: With dead ends: 294761 [2021-02-19 18:10:10,644 INFO L226 Difference]: Without dead ends: 292673 [2021-02-19 18:10:10,644 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:10:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292673 states. [2021-02-19 18:10:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292673 to 193969. [2021-02-19 18:10:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193969 states, 193968 states have (on average 3.976387857790976) internal successors, (771292), 193968 states have internal predecessors, (771292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193969 states to 193969 states and 771292 transitions. [2021-02-19 18:10:17,712 INFO L78 Accepts]: Start accepts. Automaton has 193969 states and 771292 transitions. Word has length 46 [2021-02-19 18:10:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:10:17,712 INFO L480 AbstractCegarLoop]: Abstraction has 193969 states and 771292 transitions. [2021-02-19 18:10:17,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 193969 states and 771292 transitions. [2021-02-19 18:10:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:10:18,157 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:10:18,157 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:10:18,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-19 18:10:18,157 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:10:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:10:18,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1712221091, now seen corresponding path program 25 times [2021-02-19 18:10:18,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:10:18,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458021026] [2021-02-19 18:10:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:10:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:10:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:10:18,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458021026] [2021-02-19 18:10:18,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:10:18,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 18:10:18,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573714246] [2021-02-19 18:10:18,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 18:10:18,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:10:18,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 18:10:18,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:10:18,195 INFO L87 Difference]: Start difference. First operand 193969 states and 771292 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:10:20,935 INFO L93 Difference]: Finished difference Result 293030 states and 1142523 transitions. [2021-02-19 18:10:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 18:10:20,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:10:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:10:21,858 INFO L225 Difference]: With dead ends: 293030 [2021-02-19 18:10:21,859 INFO L226 Difference]: Without dead ends: 291722 [2021-02-19 18:10:21,859 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-02-19 18:10:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291722 states. [2021-02-19 18:10:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291722 to 200246. [2021-02-19 18:10:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200246 states, 200245 states have (on average 3.9184449049913854) internal successors, (784649), 200245 states have internal predecessors, (784649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200246 states to 200246 states and 784649 transitions. [2021-02-19 18:10:29,345 INFO L78 Accepts]: Start accepts. Automaton has 200246 states and 784649 transitions. Word has length 46 [2021-02-19 18:10:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:10:29,345 INFO L480 AbstractCegarLoop]: Abstraction has 200246 states and 784649 transitions. [2021-02-19 18:10:29,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 200246 states and 784649 transitions. [2021-02-19 18:10:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:10:29,827 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:10:29,827 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:10:29,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-19 18:10:29,828 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:10:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:10:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1284087525, now seen corresponding path program 26 times [2021-02-19 18:10:29,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:10:29,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655904771] [2021-02-19 18:10:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:10:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:10:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:10:29,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655904771] [2021-02-19 18:10:29,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:10:29,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:10:29,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848035342] [2021-02-19 18:10:29,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:10:29,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:10:29,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:10:29,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:10:29,874 INFO L87 Difference]: Start difference. First operand 200246 states and 784649 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:10:31,935 INFO L93 Difference]: Finished difference Result 293831 states and 1136141 transitions. [2021-02-19 18:10:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 18:10:31,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:10:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:10:33,186 INFO L225 Difference]: With dead ends: 293831 [2021-02-19 18:10:33,186 INFO L226 Difference]: Without dead ends: 290963 [2021-02-19 18:10:33,187 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:10:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290963 states. [2021-02-19 18:10:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290963 to 193515. [2021-02-19 18:10:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193515 states, 193514 states have (on average 3.905562388250979) internal successors, (755781), 193514 states have internal predecessors, (755781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193515 states to 193515 states and 755781 transitions. [2021-02-19 18:10:40,856 INFO L78 Accepts]: Start accepts. Automaton has 193515 states and 755781 transitions. Word has length 46 [2021-02-19 18:10:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:10:40,857 INFO L480 AbstractCegarLoop]: Abstraction has 193515 states and 755781 transitions. [2021-02-19 18:10:40,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 193515 states and 755781 transitions. [2021-02-19 18:10:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:10:41,380 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:10:41,380 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:10:41,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-19 18:10:41,380 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:10:41,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:10:41,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1943365827, now seen corresponding path program 27 times [2021-02-19 18:10:41,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:10:41,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868692927] [2021-02-19 18:10:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:10:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:10:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:10:41,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868692927] [2021-02-19 18:10:41,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:10:41,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 18:10:41,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996057887] [2021-02-19 18:10:41,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 18:10:41,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:10:41,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 18:10:41,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:10:41,446 INFO L87 Difference]: Start difference. First operand 193515 states and 755781 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:10:44,121 INFO L93 Difference]: Finished difference Result 283290 states and 1078797 transitions. [2021-02-19 18:10:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 18:10:44,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:10:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:10:45,370 INFO L225 Difference]: With dead ends: 283290 [2021-02-19 18:10:45,370 INFO L226 Difference]: Without dead ends: 280266 [2021-02-19 18:10:45,370 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-02-19 18:10:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280266 states. [2021-02-19 18:10:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280266 to 193510. [2021-02-19 18:10:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193510 states, 193509 states have (on average 3.849350676195939) internal successors, (744884), 193509 states have internal predecessors, (744884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193510 states to 193510 states and 744884 transitions. [2021-02-19 18:10:52,543 INFO L78 Accepts]: Start accepts. Automaton has 193510 states and 744884 transitions. Word has length 46 [2021-02-19 18:10:52,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:10:52,543 INFO L480 AbstractCegarLoop]: Abstraction has 193510 states and 744884 transitions. [2021-02-19 18:10:52,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 193510 states and 744884 transitions. [2021-02-19 18:10:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:10:53,689 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:10:53,689 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:10:53,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-02-19 18:10:53,689 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:10:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:10:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1105737621, now seen corresponding path program 28 times [2021-02-19 18:10:53,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:10:53,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381497845] [2021-02-19 18:10:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:10:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:10:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:10:53,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381497845] [2021-02-19 18:10:53,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:10:53,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 18:10:53,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280947968] [2021-02-19 18:10:53,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 18:10:53,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:10:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 18:10:53,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:10:53,734 INFO L87 Difference]: Start difference. First operand 193510 states and 744884 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:10:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:10:55,571 INFO L93 Difference]: Finished difference Result 270531 states and 1004554 transitions. [2021-02-19 18:10:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 18:10:55,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:10:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:10:56,360 INFO L225 Difference]: With dead ends: 270531 [2021-02-19 18:10:56,360 INFO L226 Difference]: Without dead ends: 262632 [2021-02-19 18:10:56,360 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-02-19 18:10:57,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262632 states. [2021-02-19 18:11:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262632 to 177887. [2021-02-19 18:11:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177887 states, 177886 states have (on average 3.7640623770279844) internal successors, (669574), 177886 states have internal predecessors, (669574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177887 states to 177887 states and 669574 transitions. [2021-02-19 18:11:02,533 INFO L78 Accepts]: Start accepts. Automaton has 177887 states and 669574 transitions. Word has length 46 [2021-02-19 18:11:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:11:02,534 INFO L480 AbstractCegarLoop]: Abstraction has 177887 states and 669574 transitions. [2021-02-19 18:11:02,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:02,534 INFO L276 IsEmpty]: Start isEmpty. Operand 177887 states and 669574 transitions. [2021-02-19 18:11:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:11:02,930 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:11:02,930 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:11:02,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-02-19 18:11:02,930 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:11:02,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:11:02,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1031936159, now seen corresponding path program 29 times [2021-02-19 18:11:02,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:11:02,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747393588] [2021-02-19 18:11:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:11:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:11:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:11:02,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747393588] [2021-02-19 18:11:02,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:11:02,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-19 18:11:02,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400520859] [2021-02-19 18:11:02,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 18:11:02,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:11:02,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 18:11:02,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-02-19 18:11:02,968 INFO L87 Difference]: Start difference. First operand 177887 states and 669574 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:11:04,808 INFO L93 Difference]: Finished difference Result 248384 states and 919697 transitions. [2021-02-19 18:11:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-19 18:11:04,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:11:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:11:05,876 INFO L225 Difference]: With dead ends: 248384 [2021-02-19 18:11:05,876 INFO L226 Difference]: Without dead ends: 248064 [2021-02-19 18:11:05,876 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:11:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248064 states. [2021-02-19 18:11:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248064 to 177855. [2021-02-19 18:11:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177855 states, 177854 states have (on average 3.7614110450144502) internal successors, (668982), 177854 states have internal predecessors, (668982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177855 states to 177855 states and 668982 transitions. [2021-02-19 18:11:11,207 INFO L78 Accepts]: Start accepts. Automaton has 177855 states and 668982 transitions. Word has length 46 [2021-02-19 18:11:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:11:11,208 INFO L480 AbstractCegarLoop]: Abstraction has 177855 states and 668982 transitions. [2021-02-19 18:11:11,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 177855 states and 668982 transitions. [2021-02-19 18:11:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:11:12,277 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:11:12,277 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:11:12,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-02-19 18:11:12,277 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:11:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:11:12,277 INFO L82 PathProgramCache]: Analyzing trace with hash 898839393, now seen corresponding path program 30 times [2021-02-19 18:11:12,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:11:12,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333273637] [2021-02-19 18:11:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:11:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:11:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:11:12,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333273637] [2021-02-19 18:11:12,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:11:12,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 18:11:12,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895877896] [2021-02-19 18:11:12,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 18:11:12,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:11:12,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 18:11:12,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:11:12,313 INFO L87 Difference]: Start difference. First operand 177855 states and 668982 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:14,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:11:14,104 INFO L93 Difference]: Finished difference Result 251976 states and 930539 transitions. [2021-02-19 18:11:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 18:11:14,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-19 18:11:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:11:15,329 INFO L225 Difference]: With dead ends: 251976 [2021-02-19 18:11:15,329 INFO L226 Difference]: Without dead ends: 249960 [2021-02-19 18:11:15,330 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-02-19 18:11:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249960 states. [2021-02-19 18:11:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249960 to 176831. [2021-02-19 18:11:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176831 states, 176830 states have (on average 3.750076344511678) internal successors, (663126), 176830 states have internal predecessors, (663126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176831 states to 176831 states and 663126 transitions. [2021-02-19 18:11:21,176 INFO L78 Accepts]: Start accepts. Automaton has 176831 states and 663126 transitions. Word has length 46 [2021-02-19 18:11:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:11:21,177 INFO L480 AbstractCegarLoop]: Abstraction has 176831 states and 663126 transitions. [2021-02-19 18:11:21,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 18:11:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 176831 states and 663126 transitions. [2021-02-19 18:11:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-19 18:11:22,238 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 18:11:22,238 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:11:22,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-02-19 18:11:22,238 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-02-19 18:11:22,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:11:22,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1852998497, now seen corresponding path program 31 times [2021-02-19 18:11:22,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:11:22,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681071845] [2021-02-19 18:11:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:11:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:11:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:11:22,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681071845] [2021-02-19 18:11:22,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:11:22,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-19 18:11:22,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190826604] [2021-02-19 18:11:22,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-19 18:11:22,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:11:22,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-19 18:11:22,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-19 18:11:22,281 INFO L87 Difference]: Start difference. First operand 176831 states and 663126 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-02-19 18:11:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 18:11:23,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-02-19 18:11:23,814 WARN L545 AbstractCegarLoop]: Verification canceled [2021-02-19 18:11:23,817 WARN L224 ceAbstractionStarter]: Timeout [2021-02-19 18:11:23,818 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 06:11:23 BasicIcfg [2021-02-19 18:11:23,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 18:11:23,818 INFO L168 Benchmark]: Toolchain (without parser) took 389590.01 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 236.6 MB in the beginning and 13.0 GB in the end (delta: -12.7 GB). Peak memory consumption was 3.7 GB. Max. memory is 16.0 GB. [2021-02-19 18:11:23,818 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 162.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 18:11:23,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.07 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 18:11:23,818 INFO L168 Benchmark]: Boogie Preprocessor took 16.45 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.7 MB in the end (delta: 979.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 18:11:23,818 INFO L168 Benchmark]: RCFGBuilder took 272.63 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 233.5 MB in the end (delta: 157.6 kB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-02-19 18:11:23,819 INFO L168 Benchmark]: TraceAbstraction took 389274.91 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 232.8 MB in the beginning and 13.0 GB in the end (delta: -12.7 GB). Peak memory consumption was 3.7 GB. Max. memory is 16.0 GB. [2021-02-19 18:11:23,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 162.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.07 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.45 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.7 MB in the end (delta: 979.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 272.63 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 233.5 MB in the end (delta: 157.6 kB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 389274.91 ms. Allocated memory was 255.9 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 232.8 MB in the beginning and 13.0 GB in the end (delta: -12.7 GB). Peak memory consumption was 3.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (176831states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (184869 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 389.1s, OverallIterations: 31, TraceHistogramMax: 1, AutomataDifference: 115.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.7s, HoareTripleCheckerStatistics: 3042 SDtfs, 4725 SDslu, 10039 SDs, 0 SdLazy, 10094 SolverSat, 1800 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224674occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 231.8s AutomataMinimizationTime, 30 MinimizatonAttempts, 2974941 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1426 NumberOfCodeBlocks, 1426 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1395 ConstructedInterpolants, 0 QuantifiedInterpolants, 184545 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown